Jump to main content
Jump to site search

Issue 5, 2016

Synthesis and structural characterization of Zn-containing DAF-1

Author affiliations

Abstract

A study exploring the use of ionic liquid reactions based on imidazolium halides in molecular sieve synthesis has produced a novel zincoaluminophosphate material with an open DFO-type framework structure. This framework structure had only been observed previously in the magnesioaluminophosphate system (Mg-DAF-1) where decamethonium was used as the structure directing agent. The new Zn-DAF-1 material has been characterized using chemical and thermogravimetric analysis and 13C, 19F, 27Al and 31P MAS NMR techniques. Structure analysis (P6/mcc, a = 22.2244(1) Å, c = 42.3293(3) Å) using synchrotron powder diffraction data not only confirmed the framework structure, but also revealed the locations of the Al, P and Zn atoms in the framework, the N,N′-di-isopropyl-imidazolium (DIPI) ions in the pores, some fluoride ions associated with double 4-rings, and some water molecules and anions filling the remaining space. This level of structural detail had not been possible in the Mg-DAF-1 material. Four different locations for the DIPI cation were found in the two 12-ring channels and Zn was found to substitute for only one of the six crystallographically distinct Al sites to yield the approximate crystal chemical formula |(DIPI)17(OH,F)11(H2O)23|[Zn6Al126P132O528]-DFO.

Graphical abstract: Synthesis and structural characterization of Zn-containing DAF-1

Supplementary files

Article information


Submitted
19 Oct 2015
Accepted
27 Nov 2015
First published
02 Dec 2015

New J. Chem., 2016,40, 4160-4166
Article type
Paper
Author version available

Synthesis and structural characterization of Zn-containing DAF-1

A. B. Pinar, L. B. McCusker, C. Baerlocher, S. Hwang, D. Xie, A. I. Benin and S. I. Zones, New J. Chem., 2016, 40, 4160 DOI: 10.1039/C5NJ02897C

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.


Social activity

Search articles by author

Spotlight

Advertisements